package com.spx.core;

import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;

import com.spx.core.services.SecurityService;
import com.spx.kernel.KernelActivator;
import com.spx.kernel.service.CoreServiceLocator;
import com.spx.kernel.service.PersistService;

/**
 * The activator class controls the plug-in life cycle
 */
public class CoreActivator extends AbstractUIPlugin
{

	// The plug-in ID
	public static final String PLUGIN_ID = "com.spx.core";

	// The shared instance
	private static CoreActivator plugin;

	private SecurityService securityService;

	/**
	 * The constructor
	 */
	public CoreActivator()
	{
		com.spx.core.types.ui.CoreImages.getInstance().init();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext
	 * )
	 */
	@Override
	public void start(BundleContext context) throws Exception
	{
		super.start(context);
		plugin = this;
		CoreServiceLocator.getInstance().register("authority-service", com.spx.core.services.security.AuthorityServiceImpl.class);

	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext
	 * )
	 */
	@Override
	public void stop(BundleContext context) throws Exception
	{
		plugin = null;
		super.stop(context);
	}

	/**
	 * Returns the shared instance
	 * 
	 * @return the shared instance
	 */
	public static CoreActivator getDefault()
	{
		return plugin;
	}

	/**
	 * Returns an image descriptor for the image file at the given plug-in
	 * relative path
	 * 
	 * @param path
	 *            the path
	 * @return the image descriptor
	 */
	public static ImageDescriptor getImageDescriptor(String path)
	{
		return imageDescriptorFromPlugin(PLUGIN_ID, path);
	}

	public SecurityService getSecurityService()
	{
		if (securityService == null)
		{
			final PersistService ps = KernelActivator.getDefault().getPersistService();
			CoreServiceLocator.getInstance().register("security-service", com.spx.core.services.SecurityServiceImpl.class, ps);

			securityService = CoreServiceLocator.getInstance().getService("security-service", com.spx.core.services.SecurityService.class);
		}
		return securityService;
	}

}
